A social act in which a group of people gather at an abandoned urban location. People should bring to the party shit-inducing foods and drinks, such as prunes or bowel-prep solution. When the partygoers are literally full of shit, they must relieve themselves anywhere and everywhere possible, keeping within the grounds of said urban location.
Partygoer 1: "Yo dude, I'm bored."
Partygoer 2: "Yeah, so am I. Wanna go to a shit party?"
Partygoer 1: "Yea, sure bro. I'll get the prunes. This shit's gonna be a rager!"